CN113498445B - Ceiling panel - Google Patents

Abstract

A ceiling panel (1) fixed to ceiling foundations (2, 2), the ceiling foundations (2, 2) are elongated and arranged in parallel at intervals in a 2 nd direction orthogonal to the 1 st direction, the ceiling panel (1) includes a panel body (10) having a square flat plate shape, magnets (9, 9) provided on back surfaces (10 a) of both side end portions (8, 8) in the 2 nd direction of the panel body and attracted by an attracted portion of the ceiling foundation, a hooked portion (25) provided on a 1 st direction 1 st end portion (6) of the panel body, and a hooking portion (16) provided on a 1 st direction 2 nd end portion (7) of the panel body and hooked to a hooked portion of a ceiling panel adjacent in the 1 st direction.

Description

Ceiling panel

Technical Field

The present invention relates to a ceiling panel constituting a ceiling of a building.

Background

Conventionally, a ceiling panel has been known which is constructed by directly fixing its end portions to a so-called conventional ceiling base such as a hanger with screws or the like. In such a structure, the ceiling panel needs to be fixed by small screws while being held from below.

For example, patent document 1 below discloses an attachment structure in which a ceiling plate is attached to a 2 nd support frame which is disposed so as to intersect a plurality of 1 st support frames disposed in parallel and long in the 1 st direction and is supported by the 1 st support frames so as to be movable in the longitudinal direction. The mounting structure is a structure in which a ceiling plate is horizontally and transversely fed along a ceiling surface to engage a 1 st engaging portion with a 2 nd support frame on a feeding target side, and a 2 nd support frame on a feeding rear side is similarly and transversely fed to engage with a 2 nd engaging portion of the ceiling plate to mount the ceiling plate.

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. H10-159242

Disclosure of Invention

Problems to be solved by the invention

However, in the mounting structure described in patent document 1, it is necessary to horizontally move the ceiling plate in a state of being held from below, and to slide the second support frame 2 on the side after feeding while holding the ceiling plate, and further improvement is desired.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a ceiling panel capable of improving workability.

Means for solving the problems

In order to achieve the above object, a ceiling panel according to the present invention is a ceiling panel fixed to a ceiling base which is elongated in a 1 st direction and arranged in parallel with a gap in a 2 nd direction orthogonal to the 1 st direction, the ceiling panel including a panel body having a square flat plate shape, magnets which are provided on the back side of both end portions in the 2 nd direction of the panel body and attracted by an attracted portion of the ceiling base, a hooked portion which is provided on a 1 st direction 1 st end portion of the panel body, and a hooked portion which is provided on a 1 st direction 2 nd end portion of the panel body and is hooked to a hooked portion of a ceiling panel adjacent in the 1 st direction.

Effects of the invention

The ceiling panel according to the present invention can improve workability by adopting the above-described structure.

Drawings

Fig. 1 (a) and 1 (b) schematically show an example of a ceiling panel according to an embodiment of the present invention, and fig. 1 (a) is a schematic plan view and fig. 1 (b) is a schematic side view.

Fig. 2 (a) is a partially broken schematic plan view schematically showing a state where the ceiling panel is installed, and fig. 2 (b) is a partially broken schematic longitudinal sectional view corresponding to the line X1-X1 in fig. 2 (a).

Fig. 3 (a) is a schematic partial broken perspective view corresponding to the portion Z1 in fig. 2 (a), fig. 3 (b) is a schematic partial broken perspective view corresponding to the portion Z2 in fig. 1 (a), and fig. 3 (c) is a schematic partial broken perspective view corresponding to the portion Z3 in fig. 1 (a).

Fig. 4 (a) is a partially broken schematic exploded plan view corresponding to a portion Z4 in fig. 1 (a), fig. 4 (b) is a partially broken schematic vertical sectional view corresponding to a line Y1-Y1 in fig. 1 (a), and fig. 4 (c) is a schematic broken schematic vertical sectional view corresponding to a portion (b) in fig. 4 showing a modification of the coupling member provided in the ceiling panel.

Fig. 5 (a) is a schematic perspective view schematically showing an example of a construction procedure of the ceiling panel, and fig. 5 (b) is a schematic longitudinal sectional view of a broken part corresponding to fig. 2 (b) schematically showing an example of the construction procedure.

Fig. 6 (a) is a schematic perspective view schematically showing an example of a construction procedure of the ceiling panel, and fig. 6 (b) is a schematic longitudinal sectional view of a broken part corresponding to fig. 2 (b) schematically showing an example of the construction procedure.

Fig. 7 (a) and 7 (b) schematically show an example of a ceiling panel according to another embodiment of the present invention, in which fig. 7 (a) is a schematic plan view and fig. 7 (b) is a schematic side view.

Fig. 8 (a) is a partially broken schematic perspective view schematically showing the ceiling panel, fig. 8 (b) is a schematic perspective view schematically showing an example of the magnet holding member provided in the ceiling panel, and fig. 8 (c) is a partially broken schematic longitudinal sectional view corresponding to the line Y2-Y2 in fig. 8 (a).

Fig. 9 (a) is a schematic partially broken plan view corresponding to the Z5 portion in fig. 7 (a), fig. 9 (b) is a schematic partially broken plan view corresponding to the Z5 portion in fig. 7 (a), and fig. 9 (c) is a schematic partially broken longitudinal sectional view corresponding to the Y3-Y3 line in fig. 9 (b).

Fig. 10 (a) is a partially broken schematic exploded plan view corresponding to the portion Z6 in fig. 7 (a), fig. 10 (b) is a partially broken schematic plan view corresponding to the portion Z6 in fig. 7 (a), and fig. 10 (c) is a partially broken schematic longitudinal sectional view corresponding to the line X2-X2 in fig. 10 (b).

Fig. 11 (a) and 11 (b) are partially broken schematic longitudinal sectional views corresponding to fig. 2 (b).

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In some of the drawings, some of the detailed reference numerals assigned to the other drawings are omitted.

In the following embodiments, directions such as the vertical direction will be described with reference to a state in which the ceiling panel according to the embodiments is already constructed or is being constructed.

Fig. 1 to 6 are schematic views showing an example of the ceiling panel according to embodiment 1 and an example of the procedure of installing the ceiling panel.

As shown in fig. 1 (a) and 1 (b), the ceiling panel 1 according to the present embodiment includes a panel main body 10 having a square flat plate shape. As shown in fig. 2 (a) and 2 (b), the ceiling panel 1 is fixed to ceiling bases 2 and 2, and the ceiling bases 2 and 2 are arranged in parallel with each other with a long length extending in the 1 st direction and a space in the 2 nd direction orthogonal to the 1 st direction. The ceiling panel 1 is held by the ceiling bases 2 and 2 at held end portions 8 and 8 which are both side end portions in the 2 nd direction.

The ceiling base 2 to which the ceiling panel 1 is fixed may be a wooden ceiling base, but in the present embodiment, it is made of a steel ceiling base made of a ferromagnetic material. The ceiling base 2 may be made of a light iron material, and may be a so-called light steel base. The ceiling base 2 may be a suspension bar constituting a suspended ceiling, and the suspended ceiling may be suspended by suspension members such as suspension woods and suspension bolts via a groove-shaped steel (groove-shaped) suspension bar receiving portion or the like, or may have various configurations. The ceiling base 2 is disposed in parallel at substantially equal intervals (at substantially equal intervals) in a 2 nd direction orthogonal to the up-down direction and the 1 st direction, thereby constituting a ceiling base structure.

The ceiling panel 1 may be constructed as a ceiling of a relatively small building such as a house or an office, or may be constructed as a ceiling of a relatively large building such as a gymnasium, a hall, a shopping center, a factory, or a school.

Further, the ceiling panel 1 may be formed per unit area (1 m) ² ) The mass of (2) kg or less. The mass of the ceiling panel 1 may be 2.0kg/m of the entire ceiling system including the ceiling base 2 made of the light steel base as described above ² The following masses.

The panel body 10 has a substantially rectangular shape in plan view (as viewed in the thickness direction). In the present embodiment, the panel body 10 is formed in a substantially square shape in a plan view, but may be formed in a substantially rectangular shape. The size of the panel main body 10 in a plan view may be set to an appropriate size from the viewpoint of handling property, workability, and the like, and for example, the length of 1 side may be set to 0.3m or more, or 2.0m or less. In the panel main body 10 formed in a substantially square shape, the length of 1 side may be 0.4m to 1.5m, or may be about 0.9m to 1.2 m. In the substantially rectangular panel body 10, the length of the short side may be 0.3m or more and the length of the long side may be 2.0m or less.

The thickness of the panel body 10 depends on the layer structure and the like, and may be, for example, about 3.0mm to 15.0 mm.

The panel body 10 may be a gypsum board, a calcium silicate board, or the like, but in the present embodiment, as shown in fig. 2 (b), it has a structure including a base material 11 of a foaming resin or a fiber. The base material 11 of the foamed resin may be made of a resin composition such as a polyurethane resin, a polystyrene resin, a polyethylene resin, a polypropylene resin, a phenol resin, or an epoxy resin. The fiber-based substrate 11 may be made of mineral fibers such as glass wool and asbestos. In the illustrated example, the base material 11 is a foamed resin layer. The substrate 11 occupies most of the panel body 10, and may have a thickness of about 80% to 99% of the thickness of the panel body 10, for example.

The panel body 10 is configured such that the surface layer 12 is provided on one side in the thickness direction of the substrate 11, which is the indoor side. The surface layer 12 may include a flame retardant layer.

The flame-retardant layer as described above may be configured appropriately so that the ceiling panel 1 meets the technical standards set by the building standards law for performance required of nonflammable materials and the like. For example, the ceiling panel 1 may be configured to satisfy a "nonflammable material" criterion among technical criteria, preferably may be configured to satisfy a "quasi-nonflammable material" criterion, and more preferably may be configured to satisfy a "nonflammable material" criterion. For example, a foil-shaped aluminum sheet may be used as the flame retardant layer.

Further, the surface layer 12 may be provided with a reinforcing layer containing reinforcing fibers such as glass fibers. The reinforcing layer may be a reinforcing fiber sheet such as a glass mesh, or may be a fiber-reinforced resin layer such as a glass fiber-reinforced resin layer in which a resin is impregnated into the reinforcing fiber sheet. The surface (indoor side) of the surface layer 12 facing downward (indoor side) may be a decorative surface to which an appropriate surface decoration treatment such as adhesion of a decorative sheet, printing, or painting is applied, or may be a base surface to which an appropriate decorative sheet is adhered.

The panel body 10 is configured such that a reinforcing layer 13 is laminated on the back side (ceiling base side) of the base material 11. With such a configuration, the weight of the base material 11 can be reduced and the sagging can be suppressed by the reinforcing layer 13 on the back side. As described above, the reinforcing layer 13 may be a reinforcing fiber sheet such as a glass mesh, or may be a fiber-reinforced resin layer such as a glass fiber-reinforced resin layer in which a resin is impregnated into a reinforcing fiber sheet.

The panel body 10 has a structure in which a facing layer is provided on a side end surface of the periphery of the base material 11. The end face layer may have the same structure as the surface layer 12. The facing layer may be provided continuously from the surface layer 12, or may be provided separately in an edge sheet form.

As shown in fig. 1 (a), magnets 9, 9 attracted to attracted portions of the ceiling bases 2, 2 are provided on the back surface 10a sides of the held end portions 8, 8 on both sides of the panel body 10 in the 2 nd direction. Further, on the back surface 10a side of the 1 st end portion 6 in the 1 st direction of the panel body 10, a hooked portion 25 constituting a connected portion is provided. Further, a hooking portion 16 that engages with a hooked portion 25 of the ceiling panel 1 adjacent to the panel body 1 in the 1 st direction to form a coupling portion is provided at the 2 nd end portion 7 that is one of the 1 st direction both side end portions 6, 7 of the panel body 10. With this configuration, the hook-and-hold portion 16 of the 2 nd end portion 7 can be hooked on the hook-and-hold portion 25 of the ceiling panel 1 adjacent to the 1 st direction, and the magnets 9, 9 of the held end portions 8, 8 on both sides in the 2 nd direction can be attracted to the attracted portions of the ceiling bases 2, whereby the ceiling panel 1 can be attached or temporarily fixed. This makes it possible to easily construct the ceiling panel 1, to reduce the number of people to be constructed, and to easily construct one person.

As shown in fig. 1 (a), the magnet 9 is provided so as to extend in the 1 st direction along the held end portion 8. The magnets 9 are provided so that the ceiling panel 1 can be held (temporarily held) by attraction to the ceiling bases 2 and 2 on both sides in the 2 nd direction. In the present embodiment, a plurality of (5 in the drawing) magnets 9 are provided at intervals in the 1 st direction on the held end portion 8. In the figure, an example is shown in which a plurality of magnets 9 are provided at substantially equal intervals in the 1 st direction. Further, the example in which the magnets 9 and 9 are provided also in the vicinity of the 1 st end 6 and the vicinity of the 2 nd end 7 is shown. Instead of this configuration, the magnet 9 may be provided over substantially the entire held end portion 8 in the 1 st direction. The length of the magnet 9 in the 1 st direction and the width of the magnet 9 in the 2 nd direction may be set to appropriate dimensions from the viewpoint of holding (temporary holding) of the ceiling panel 1, from the viewpoint of suppressing sagging, from the viewpoint of reducing the weight, and the like.

The magnet 9 is formed in a plate shape with its thickness direction along the thickness direction of the panel body 10 (see also fig. 1 (b)). The thickness of the magnet 9 may be about 1mm to 5 mm. In the present embodiment, the magnet 9 is provided on the back surface 10a of the panel body 10 in a stacked manner. The magnet 9 may be fixed to the panel body 10 by an appropriate adhesive or adhesive. The attracted portion of the ceiling base 2 attracted by the magnetic force of the magnet 9 is the entire lower surface (indoor side surface) of the ceiling base 2 when the ceiling base 2 is made of a ferromagnetic material as described above. Alternatively, instead of this configuration, a configuration may be adopted in which a suitable sheet-shaped magnet, sheet-shaped ferromagnetic material, or the like is provided as an attracted portion in an attached or embedded manner on the lower surface side of the ceiling base 2 made of a non-magnetic material.

As shown in fig. 1 (a) and 1 (b), the hook portion 16 includes a folded-back piece 17a formed so as to be bent toward the indoor side from the front end portion in the extending direction of the extending portion 17 and folded back toward the 1 st direction inner side, and the extending portion 17 extends toward the 1 st direction outer side from the 2 nd end portion 7 of the panel body 10. As shown in fig. 5 and 6, the hooked portion 25 is configured to be able to hook and hold the folded-back piece 17a of the ceiling panel 1 in a state where the 2 nd end portion 7 of the ceiling panel 1 adjacent in the 1 st direction is positioned above the 1 st end portion 6. With such a configuration, the hooked portion 25 of the ceiling panel 1 that has been constructed can hold the ceiling panel 1 by hooking the folded-back piece 17a of the ceiling panel 1 that has not been constructed from the lower side with the 2 nd end portion 7 side being the upper side. This can improve workability as compared with a structure in which the work needs to be horizontally moved while being held at a high position. From the state where the 2 nd end portion 7 side is held in this way, the ceiling base 2 can be rotated with the 2 nd end portion 7 side as a fulcrum, and the 1 st end portion 6 side can be raised and fixed to the ceiling base 2. In particular, in the present embodiment, since the magnets 9 and 9 are provided at the held end portions 8 and 8 as described above, the ceiling panel 1 can be easily held (temporarily held) with respect to the ceiling bases 2 and 2 by the magnets 9 and 9 at the held end portions 8 and 8 by raising the 1 st end portion 6 side from the state of holding the 2 nd end portion 7 side.

On the proximal end side of the hooking portion 16, an abutment surface 16a is provided so as to face the folded-back piece 17a, and the abutment surface 16a abuts against an abutted surface 26a of the hooked portion 25 provided on the ceiling panel 1 adjacent in the 1 st direction to restrict the movement of the adjacent ceiling panels 1, 1 in the 1 st direction approaching side. With such a configuration, the alignment between the ceiling panels 1 and 1 can be easily performed by moving the ceiling panel 1 that has not been constructed relative to the ceiling panel 1 that has been constructed while being held by the ceiling panel 1 that has been constructed as described above and bringing the abutment surface 16a into abutment with the abutted surface 26a. As a result, as shown in fig. 2 (b), when a penetrating gap is provided between the end faces of the ceiling panels 1, 1 adjacent to each other in the 1 st direction, which face each other in the 1 st direction, the gap between the ceiling panels 1, 1 can be easily equalized. The gap between the ceiling panels 1 and 1 adjacent to each other in the 1 st direction may be about 1mm to 15 mm.

The hook 16 is fixed to the 2 nd end 7 by a fastening tool 4, the fastening tool 4 is fixed to an insertion piece 19 so as to penetrate a base end side piece 18 constituting a fixing piece, and the insertion piece 19 is inserted into the layer of the panel body 10 from a cut portion 14 opened in the back surface 10a of the 2 nd end 7. As shown in fig. 4 (a) and 4 (b), the base-end-side piece 18 is configured to be disposed along the back surface 10a of the 2 nd end portion 7 in the present embodiment, and is provided in the connecting member 15 having the hook portion 16. With such a configuration, the coupling member 15 can be made less conspicuous when viewed from the front surface side. The connecting member 15 is mechanically fixed to the 2 nd end portion 7 by the fastening tool 4 attached to the insertion piece portion 19 in a state where the back surface side layer (sandwiched layer) 13a of the panel body 10 is sandwiched between the insertion piece portion 19 and the base end side piece portion 18. Thus, the structure in which the coupling member 15 is provided on the back surface side can improve the fixing strength of the coupling member 15 to the 2 nd end portion 7 as compared with the configuration in which the base end side piece portion 18 is fixed to the 2 nd end portion 7 with an adhesive or a fixing tool 4 fixed only to the panel main body 10. In the present embodiment, the notch 14 is provided so as to extend in the 1 st direction. With such a configuration, compared to a configuration in which the insertion piece portion 19 is inserted into the notch portion extending in the 2 nd direction, it is possible to reduce a load acting on the rear surface side layer around the notch portion 14 when a load in the panel thickness direction acts on the hook portion 16 due to the weight of the ceiling panel 1, a load due to an adjacent ceiling panel 1, or the like.

In the present embodiment, the reinforcing layer 13 on the back surface 10a side of the panel body 10 is penetrated and the cut portion 14 is provided. With such a configuration, the insertion piece 19 is disposed to be inserted into the inner layer side of the reinforcing layer 13. That is, the sandwiched layer 13a including at least the reinforcing layer 13 is sandwiched between the insertion piece portion 19 and the base end side piece portion 18, and the fixing strength of the connecting member 15 to the 2 nd end portion 7 can be more effectively improved. That is, the fixing strength of the connecting member 15 can be improved as compared with a configuration in which such a reinforcing layer 13 is not provided and only the foamed resin layer and the mineral fiber layer are sandwiched.

In the present embodiment, the notches 14 and 14 are provided in two parallel positions at an interval in the 2 nd direction. The insertion piece portion 19 is inserted from one of the notches 14 and 14, and the insertion direction tip portion 19b is exposed to the back surface 10a side of the panel main body 10 through the other notch 14. With such a configuration, the load when the load acts on the hook 16 as described above can be distributed to and borne by the back surface side layer around the 2 cuts 14, as compared with the configuration in which the load is inserted into the 1 cut 14. This can more effectively improve the fixing strength of the connecting member 15 to the 2 nd end portion 7.

In the present embodiment, the base-end side piece 18 is provided with the extension portion 18b that extends inward in the 1 st direction (toward the 1 st end 6) relative to the insertion piece 19. With such a configuration, the load that causes hook 16 to rotate toward the ceiling base 2 with respect to the panel body 10 due to the load acting thereon can be received by the extension 18b along the back surface 10a of the panel body 10. This can more effectively improve the fixing strength of the connecting member 15 to the 2 nd end portion 7.

In the present embodiment, the insertion piece portion 19 and the base end side piece portion 18 are provided separately. With such a configuration, the insertion piece portion 19 can be prevented from being caught or twisted when the insertion piece portion 19 is inserted, as compared with a configuration in which the insertion piece portion 19 is integrally provided in the proximal end side piece portion 18.

The base-side sheet portion 18 is formed into a plate shape with its thickness direction along the thickness direction of the panel body 10. In the illustrated example, the base end side piece portion 18 is formed in a substantially rectangular shape when viewed in the thickness direction. Further, an example is shown in which both corners of the 1 st direction inner end of the base end side piece portion 18 (the extension portion 18b in the present embodiment) are convexly curved when viewed in the thickness direction.

The base end side piece 18 is provided with an insertion hole 18a through which the shaft of the fastening tool 4 is inserted.

Further, the dimension of the base end side piece portion 18 in the 1 st direction is set larger than the dimension of the insertion piece portion 19 in the 1 st direction to form the protruding portion 18b inside in the 1 st direction. The extension 18b is provided continuously from the 1 st direction inner side of the base end side piece 18. The thickness of the base end side piece portion 18 may be set to a suitable size from the viewpoint of strength and weight reduction, for example, to about 0.3mm to 3 mm.

The 1 st-direction outer end hook 16 of the base end side piece 18 is provided continuously. As shown in fig. 1 (b) and 2 (b), a rising piece portion provided to rise upward (toward the ceiling base 2) from the 1 st direction outer end of the base-end-side piece portion 18 is provided at the base end of the hook portion 16, and the surface of the rising piece portion facing outward in the 1 st direction constitutes an abutment surface 16a. In the illustrated example, the standing piece portion is provided from the 1 st direction outer end of the base end side piece portion 18 via the inclined piece portion extending obliquely upward.

The protruding portion 17 is provided to extend outward in the 1 st direction from the upper end of the upright piece portion. The projecting dimension of the projecting portion 17 in the 1 st direction from the end face of the 2 nd end portion 7 of the panel body 10 may be set to a dimension suitable for weight reduction and the like so as to be easily hooked from the lower side to the hooked portion 25 of the ceiling panel 1 that has been constructed.

Further, the extension 17 is formed in a hook shape having a folded piece 17a at a front end portion thereof. The folded-back piece 17a is provided so that the tip thereof faces inward in the 1 st direction. In the figure, an example is shown in which the tip of the folded-back piece 17a is provided so as to be positioned at the same height as the standing piece constituting the contact surface 16a. In the figure, the folded piece 17a is shown as being formed in a substantially semicircular arc shape (substantially C-shaped) when viewed in the 2 nd direction, but may be formed in a substantially V-shape having a single bent portion, a shape having a plurality of bent portions, or the like. The dimension of the folded portion of the folded-back piece 17a in the 1 st direction may be set to a dimension suitable for the purpose of weight reduction, for example, so as to be easily hooked from the lower side to the hooked portion 25 of the ceiling panel 1 that has been constructed.

The inclined piece portion, the rising piece portion, the protruding portion 17, and the folded piece 17a of the hook portion 16 may be formed continuously by pressing, bending, or the like as appropriate, to have the same thickness as that of the base end side piece portion 18. The width dimension of the hook portion 16 in the 2 nd direction is set to be the same as the width dimension of the base end side piece portion 18 in the 2 nd direction.

As shown in fig. 4 (a) and 4 (b), the insertion piece 19 is formed into a substantially plate shape with its thickness direction along the thickness direction of the panel body 10. In the drawings, an example is shown in which the insertion piece portion 19 is formed into a substantially rectangular shape when viewed in the thickness direction. The insertion direction distal end portion 19b of the insertion piece portion 19 is tapered toward the distal end side as viewed in the thickness direction. With such a configuration, the insertion piece 19 can be easily inserted into the layer of the panel body 10 through the cut portion 14. Further, an example in which both corner portions of the insertion direction distal end portion 19b are formed into a convex curved shape as viewed in the thickness direction is shown.

The insertion piece 19 is provided with a fixing hole 19a for fixing the shaft of the fastening tool 4. The fixing hole 19a may be a female screw hole screwed to the shaft portion of the fastening tool 4, or may be a guide hole screwed to the shaft portion of the fastening tool 4. The thickness of the insertion piece 19 may be set to a suitable size from the viewpoint of strength, weight reduction, or the like, and may be set to about 0.5mm to 3mm, for example.

In the present embodiment, the insertion direction base end portion of the insertion piece portion 19 is provided with the rising piece portions 19c and 19d rising upward (toward the ceiling base 2). In the drawing, an example is shown in which the rising piece portions 19c and 19c abutting on one side portion of the base end side piece portion 18 are provided at both sides in the 1 st direction with a space therebetween, and the rising piece portion 19d rising from the protruding portion extending in the reverse insertion direction is provided therebetween. With such a configuration, the insertion piece 19 can be easily inserted into the layer of the panel body 10 through the cut portion 14 by gripping the rising piece 19 d.

The dimension of the rising piece portions 19c, 19c on both sides in the insertion direction from the rising piece portions 19c, 19c to the center of the hole of the installation hole 19a is set to be substantially the same as the dimension of the base-end side piece portion 18 in the same direction from the one side portion thereof to the center of the hole of the insertion hole 18a. With such a configuration, the one side of the base-side piece 18 is brought into contact with the upright pieces 19c, and the base-side piece 18 is superimposed on the insertion piece 19, whereby the centers of the hole in the 2 nd direction of the fitting hole 19a and the insertion hole 18a can be aligned with each other, and positioning can be easily performed.

These rising pieces 19c, and 19d are provided continuously at the proximal end in the insertion direction of the insertion piece 19. The rising dimension of the rising piece portions 19c, and 19d along the panel thickness direction may be set to an appropriate dimension so as not to interfere with a base provided at a middle portion in the 2 nd direction of the ceiling panel 1 for installation, reinforcement, or the like of equipment or the like. In the figure, an example is shown in which the front end portions in the rising direction of the rising piece portions 19c, and 19d are set to be substantially the same height as the contact surface 9a of the magnet 9 with the ceiling base 2.

The dimension of the insertion sheet portion 19 in the insertion direction (2 nd direction) from the upright sheet portion 19c is set to be larger than the dimension of the base-side sheet portion 18 in the 2 nd direction so that the insertion-direction tip portion 19b is exposed on the back surface 10a side of the panel main body 10. The dimension in the 2 nd direction between the 2 cuts 14, 14 formed in the panel body 10 is set to be smaller than the dimension in the 2 nd direction of the insertion piece 19. The dimension of the 2 cuts 14 and 14 in the 1 st direction is set to be larger than the dimension of the insertion piece 19 in the 1 st direction. The dimension of the 2 cuts 14 and 14 in the 1 st direction may be slightly larger than the dimension of the insertion piece 19 in the 1 st direction.

The insertion piece 19 may be formed continuously by pressing, bending, or the like as appropriate. The hook 16 including the insertion piece 19 and the base-side piece 18 may be formed of an appropriate metal material.

The coupling member 15 having the above-described structure may be fixed to the 2 nd end portion 7 of the panel body 10 as follows.

First, the insertion piece 19 is inserted into the layer of the panel body 10 through one of the 2 cuts 14, 14 formed in the 2 nd end 7 of the panel body 10. These 2 cut portions 14 and 14 may be formed by a cutter or the like so as to penetrate at least the reinforcing layer 13. The insertion direction tip portion 19b of the insertion piece portion 19 is exposed to the back surface 10a side of the panel main body 10 through the other cut portion 14, and the insertion piece portion 19 is attached to the 2 nd end portion 7 of the panel main body 10. At this time, the insertion piece 19 may be attached by compression-deforming the base material 11 of the panel body 10 (see fig. 4 (b)). In this state, the sandwiched layer 13a including the reinforcing layer 13 between the 2 cuts 14 and 14 is disposed above the insert piece 19. The sandwiched layer 13a may include a part of the substrate 11.

The positions of the insertion piece 19 and the base end side piece 18 are adjusted so that the insertion hole 18a is aligned with the fitting hole 19a of the insertion piece 19, the base end side piece 18 is superimposed on the sandwiched layer 13a, and the projecting dimension of the hook 16 outward in the 1 st direction is a predetermined dimension. Next, the fastening tool 4 is fitted into the fitting hole 19a of the insertion piece portion 19 via the insertion hole 18a of the base-end side piece portion 18. Thereby, the shaft portion of the fastening tool 4 penetrates the sandwiched layer 13a sandwiched between the base end side piece portion 18 and the insertion piece portion 19, and fixes the insertion piece portion 19 and the base end side piece portion 18 to the 2 nd end portion 7. In the illustrated example, the shaft portion of the fastening tool 4 is provided so as to extend over the central portion of the base material 11 in the thickness direction. The insertion piece portion 19 is not limited to the above-described configuration, and one or both of the rising piece portions 19c, and 19d and the insertion direction front end portion 19b exposed to the back surface 10a may not be provided. The base end side piece portion 18 is not limited to the above-described configuration, and may be configured without the above-described protruding portion 18b.

As shown in fig. 1a, in the present embodiment, a plurality of (3 in the drawing) coupling members 15, 15 are provided at intervals in the 2 nd direction at the 2 nd end portion 7. These coupling members 15, 15 have the same structure. These plurality of coupling members 15, and 15 are provided at substantially equal intervals from each other. In addition, an example is shown in which the dimension along the 2 nd direction from the end faces of the held end portions 8, 8 on both sides in the 2 nd direction to the coupling members 15, 15 on the outermost side in the 2 nd direction is set to be substantially the same as the dimension between the coupling members 15, 15 adjacent to each other. Further, the coupling members 15, and 15 may not be provided at the wall-side 2 nd end portion 7 of the ceiling panel 1.

Instead of the above-described configuration, the coupling member 15 may be a coupling member 15A provided in the ceiling panel 1A according to the modification as shown in fig. 4 (c). In the following modifications, differences from the above-described examples will be mainly described, and the same components will be denoted by the same reference numerals, and the description thereof will be omitted or simplified. Further, the description of the operational effects and the order of mounting which are exerted similarly to the above-described examples will be omitted or simplified.

The connecting member 15A according to the present modification is configured such that the insertion piece portion 19A is bent from the 2 nd-direction one-side portion of the base-end side piece portion 18A and integrally provided in the connecting member 15A. With such a configuration, the handling property can be improved compared to the case where the insertion piece portion 19 is provided separately from the connecting member 15 (the proximal side piece portion 18) as in the above-described example. In addition, when the insertion piece portion 19A and the base-end side piece portion 18A are provided with the above-described installation hole 19A or insertion hole 18A, the positioning thereof is not necessary, and the mountability can be improved.

That is, the insertion piece 19A is provided continuously at the 2 nd direction one side portion of the base end side piece 18A. The gap in the thickness direction of these base-side piece portion 18A and insertion piece portion 19A is set to an appropriate size so as to be able to receive the sandwiched layer 13a. Further, the base-end side piece portion 18A may be provided with an appropriate inclined guide surface or the like on the other side portion in the 2 nd direction for facilitating the reception of the sandwiched layer 13a.

In addition, although the 1 st end portion 6 side of the ceiling panel 1 provided with the coupling member 15 and the procedure for construction are described below, the 1 st end portion 6 side of the ceiling panel 1A provided with the coupling member 15A and the procedure for construction are also the same in the modification.

The connecting members 15 and 15A are not limited to the above-described form of being fixed to the 2 nd end portion 7 via the insertion pieces 19 and 19A. Further, as will be described later with reference to the reinforcing member 20, the coupling members 15 and 15A may be provided over substantially the entire 2 nd end portion 7 in the 1 st direction. That is, hook 16 may be provided in a reinforcing member provided over substantially the entire 2 nd end 7 in the 1 st direction. The coupling members 15 and 15A and the hook portion 16 provided at the 2 nd end portion 7 of the panel body 10 may be modified in various ways.

As shown in fig. 2 (b), a fixing piece 23 that protrudes outward from the 1 st end 6 toward the 1 st direction and is fixed to the ceiling base 2 is provided on the back surface 10a side of the 1 st end 6 of the panel body 10. With this configuration, the fastening tool 3 can be fixed from the indoor side (lower side) to the ceiling base 2 via the fixing piece portion 23 protruding from the 1 st end portion 6 toward the 1 st direction outer side, and the ceiling panel 1 can be fixed to the ceiling base 2 (see fig. 5 (b)). In addition, the hooked portion 25 fixed to the 1 st end portion 6 of the ceiling panel 1 of the ceiling base 2 via the fixing piece portion 23 in this way can hook the hooked portion 16 of the 2 nd end portion 7 of the ceiling panel 1 adjacent in the 1 st direction. Further, since the fixing piece portion 23 is configured to protrude from the rear surface 10a side of the panel main body 10 to the 1 st direction outer side, the ceiling panel 1 can be made less conspicuous from the front surface side in a state where the ceiling panel 1 adjacent in the 1 st direction is connected.

In the present embodiment, the contact surface 23a of the fixing piece 23 that contacts the ceiling base 2 and the contact surface 9a of the magnet 9 that contacts the ceiling base 2 are formed in the same plane. With such a configuration, the abutting surfaces 9a and 23a can be stably abutted against the ceiling base 2 while reducing the necessity of providing the magnets 9 in an embedded state. The contact surface 23a of the fixing piece 23 and the contact surface 9a of the magnet 9 are formed in the same plane, and are not limited to the completely same plane, and include a deviation of about 2mm in the panel thickness direction, for example.

The fixing piece 23 is provided so that a gap is formed between the fixing piece 23 and the back surface 10a of the ceiling panel 1 adjacent to the fixing piece 23 in the 1 st direction, the gap being greater than or equal to the dimension of the cap 3a of the fastening tool 3 for fastening the fixing piece 23 to the ceiling base 2 along the axial direction. With such a configuration, interference between the back surface 10a of the ceiling panel 1 adjacent in the 1 st direction and the cap 3a of the fastening tool 3 for fastening the fastening piece 23 to the ceiling base 2 can be suppressed, and a level difference between the surfaces of the ceiling panels 1 and 1 adjacent in the 1 st direction can be made less likely to occur.

In the present embodiment, the fixing piece portion 23 and the hooked portion 25 are provided in the reinforcing member 20 as shown in fig. 1, and the reinforcing member 20 is fixed over substantially the entire portion in the 2 nd direction so as to extend along the back surface 10a of the 1 st end portion 6 of the panel body 10. With such a configuration, the reinforcing member 20 can be made less conspicuous from the front surface side as described above, and the strength of the 1 st end portion 6 of the ceiling panel 1 can be increased by the reinforcing member 20, so that sagging or the like can be suppressed. Further, the fixing piece portion 23 can be stably fixed to the ceiling base 2, and the holding strength of the 2 nd end portion 7 of the ceiling panel 1 adjacent in the 1 st direction hooked on the hooked portion 25 of the reinforcing member 20 fixed as described above can be improved. With this configuration, the necessity of providing the ceiling base at a relatively small pitch in the 2 nd direction as in the conventional art can be reduced, and the hanging down of the central portion in the 2 nd direction of the ceiling panel 1 can be suppressed while the connector and the like are not exposed on the front surface side. That is, the weight of the entire ceiling system including the ceiling base 2 can be reduced, the holding strength of the ceiling panel 1 can be improved, the hanging-down can be suppressed, and the appearance on the front surface side can be improved.

The reinforcing member 20 includes: a base portion 21 which is long in the 2 nd direction of the panel body 10 and extends along the back surface 10a of the 1 st end portion 6; and an attachment portion 22 provided on the base portion 21 and attaching the reinforcing member 20 to the panel body 10.

The base portion 21 is provided over substantially the entire surface of the panel main body 10 in the 2 nd direction, and has a plate shape with its thickness direction along the thickness direction of the panel main body 10. In the present embodiment, the base portion 21 is provided over the entire panel main body 10 in the 2 nd direction. The reinforcing member 20 provided over substantially the entire panel body 10 in the 2 nd direction may have a length of 7/10 or more of the dimension of the panel body 10 in the 2 nd direction.

The width and thickness of the base portion 21 in the 1 st direction may be set to appropriate dimensions from the viewpoint of strength and weight reduction. In the drawing, an example is shown in which a plurality of long holes having a long diameter in the 2 nd direction are provided in the base portion 21 at intervals in the 2 nd direction. Further, a portion of the base portion 21 protruding from the portion where the elongated hole is provided toward the end face of the 1 st end portion 6 in the 1 st direction is disposed so as to partition a bottom side of a gap formed between the ceiling panels 1, 1 adjacent to each other in the 1 st direction.

In the present embodiment, as shown in fig. 3 (b), the base portion 21 is provided with a 1 st contact piece portion 21a that contacts the end face of one held end portion 8 of the panel main body 10 and a 2 nd contact piece portion 21b that contacts the end face of the 1 st end portion 6. With such a configuration, the reinforcing member 20 can be easily positioned with respect to the mounting position of the panel body 10.

These 1 st and 2 nd contact piece portions 21a and 21b are provided so as to protrude downward from the 1 st end portion in the longitudinal direction of the base portion 21. In the illustrated example, the 1 st contact piece portion 21a and the 2 nd contact piece portion 21b are provided continuously and orthogonally to each other so as to extend along the outer corner portion of the end face of the one held end portion 8 and the end face of the 1 st end portion 6. One or both of the 1 st contact piece portion 21a and the 2 nd contact piece portion 21b may be provided at the 2 nd end in the longitudinal direction of the base portion 21.

In the present embodiment, the first 1 st end in the longitudinal direction of the base portion 21 is provided with the 3 rd contact piece portion 21c that contacts the end face of the held end portion 8 of the panel main body 10 of the ceiling panel 1 adjacent in the 2 nd direction. The 3 rd contact piece portion 21c is provided so as to protrude from the end face of the held end portion 8 of the panel main body 10, so that the same penetrating gap as described above is formed between the end faces facing in the 2 nd direction between the ceiling panels 1, 1 adjacent in the 2 nd direction. With such a configuration, the gap between the ceiling panels 1, 1 can be easily equalized. In the illustrated example, the 3 rd contact piece portion 21c is provided continuously to the 1 st contact piece portion 21a via a protruding piece portion protruding outward in the 2 nd direction from the 1 st contact piece portion 21 a. The lower surface of the ceiling base 2 is disposed on the bottom side of a gap formed between the ceiling panels 1 and 1 adjacent to each other in the 2 nd direction, and the bottom side of the gap is partitioned.

The attachment portion 22 is provided continuously so as to extend from the 1 st direction inner side portion of the base portion 21 toward the 1 st direction inner side, and is in the form of a sheet having the same thickness as the base portion 21. In the present embodiment, a plurality of (3 in the drawing) mounting portions 22, 22 are provided at intervals in the longitudinal direction of the base portion 21. The mounting portions 22, 22 are provided so as to be located in the vicinity of the held end portions 8, 8 on both sides in the 2 nd direction of the panel body 10. Further, the other mounting portions 22 are provided at substantially equal intervals between the mounting portions 22 and 22 on both sides in the 2 nd direction.

As shown in fig. 3b and 3c, the mounting portions 22, and 22 are provided with insertion holes 22a through which shaft portions of the fastening tool 5 (see fig. 3 a) for fixing the mounting portions to the panel body 10 are inserted. As shown in fig. 3 (a), the same insert piece 30 as described above is provided on the inner layer side of the panel body 10 of the attachment portions 22, 22. The insertion piece 30 is provided with the same setting hole as described above, although not shown. The insertion piece portion 30 is provided with an insertion direction front end portion 30a and rising piece portions 30b, and 30c, as described above. The form of fixing the reinforcing member 20 to the panel body 10 is not limited to this configuration, and various modifications may be made.

As shown in fig. 1, the fixing piece portion 23 is provided over substantially the entire 2 nd direction of the panel main body 10, and has a plate shape in which the thickness direction is along the thickness direction of the panel main body 10. The fixed piece portion 23 is provided continuously in the base portion 21 via a rising piece portion provided so as to rise upward from the 1 st direction outer end portion of the base portion 21. The rising dimension of the rising piece portion is set to an appropriate dimension so that the contact surface 23a of the fixed piece portion 23 facing upward is flush with the contact surface 9a of the magnet 9 as described above. The rising dimension of the rising piece portion is set to an appropriate dimension such that the dimension along the panel thickness direction from the surface facing the lower side of the fixed piece portion 23 to the back surface 10a of the panel body 10 is equal to or larger than the dimension along the axial direction of the cap portion 3a of the fastening tool 3.

The width and thickness of the fixing piece 23 in the 1 st direction may be set to appropriate dimensions from the viewpoint of strength and weight reduction. In the illustrated example, a plurality of elongated holes having a long diameter in the 2 nd direction are provided at intervals in the 2 nd direction substantially similarly to the base portion 21 in the fixed piece portion 23.

As shown in fig. 3 (b) and 3 (c), insertion holes 23b and 23b through which shaft portions of the fastening tool 3 to be fixed to the ceiling bases 2 and 2 are inserted are provided at both longitudinal end portions of the fixing piece portion 23. These insertion holes 23b and 23b are elongated holes having a long diameter in the 2 nd direction.

In the present embodiment, as shown in fig. 3 (c), an abutting piece 23c that abuts an end face of the held end 8 of the ceiling panel 1 is provided at the second longitudinal end 2 of the fixed piece 23, and the held end 8 of the ceiling panel 1 and the second longitudinal end 2 of the fixed piece 23 face each other in the second longitudinal direction. With such a configuration, the gap between the ceiling panels 1, 1 can be easily equalized. In the illustrated example, the 2 nd end in the longitudinal direction of the fixed piece portion 23 is projected outward in the 2 nd direction, and the abutting piece portions 23c and 23c are provided in a pair shape so as to hang downward from both the 1 st direction side portions of the projected portion.

The hooked portion 25 is provided on the 1 st direction outer side of the fixed piece portion 23 as shown in fig. 1 (b) and 6 (b).

In the present embodiment, the hooked portion 25 includes a hooked piece 26, and the hooked piece 26 is shaped like a plate with the thickness direction along the 1 st direction, and hooks the folded piece 17a of the hooking portion 16. The hooked portion 25 includes a release prevention piece 28, and the release prevention piece 28 is provided with an insertion hole 29 through which the folded piece 17a is inserted, so as to be positioned on the 1 st direction outer side of the hooked piece 26 and to be parallel to the hooked piece 26. With such a configuration, the folded-back piece 17a is inserted into the insertion hole 29 of the release preventing piece 28 while being held by the hooked piece 26. Thus, even when an impact is applied to the non-constructed ceiling panel 1 from below and the non-constructed ceiling panel 1 is held by the folded-back piece 17a in the hooked portion 25 of the constructed ceiling panel 1 as described above, the hooked and held state is hardly released, and it is possible to suppress an undesired fall-off of the non-constructed ceiling panel 1.

The hooked piece 26 is provided so as to protrude upward from the 1 st-direction outer end of the fixed piece portion 23. The surface of the hooked piece 26 facing outward in the 1 st direction constitutes a contacted surface 26a that is contacted with the contact surface 16a of the hooking portion 16.

The dimension of the hooked piece 26 in the 2 nd direction is set to be larger than the dimension of the hooking portion 16 in the 2 nd direction. The projecting dimension of the hooked piece 26 is set to an appropriate dimension so that the folded piece 17a of the hook portion 16 can be hooked and held. In the present embodiment, the hooked portion 26 is provided in a slit shape from the fixed piece portion 23 as shown in fig. 3 (a). The hooked pieces 26 are provided at a plurality of positions (3 positions in the drawing) at intervals in the 2 nd direction along the 1 st end portion 6 of the panel body 10 so as to be positioned corresponding to the hooking portions 16.

In the present embodiment, as shown in fig. 6 (b), the fixed piece 23 is provided with a guide inclined piece 24 serving as a guide portion for the folded piece 17a. When the ceiling panel 1 to be held by the hooked piece 26 is moved closer to the 1 st direction with respect to the ceiling panel 1 provided with the guide inclined piece portion 24, the guide inclined piece portion 24 functions as a guide portion of the folded-back piece 17a that moves in the same direction. The guide inclined piece 24 is provided in a slit shape from a position halfway in the 1 st direction of the fixed piece 23 toward the lower side opposite to the hooked piece 26. The guide inclined piece 24 is inclined at a downward gradient toward the 1 st direction outer side. With such a configuration, the hooked portion 26 is provided in a slit shape, and the folded piece 17a is not easily hooked to the hole edge of the fixed piece portion 23 formed by the hooking portion, so that the folded piece 17a can be smoothly guided to the 1 st direction inner side along the guide inclined piece portion 24. The guide inclined piece portion 24 is provided at a position corresponding to the hooked piece 26. That is, the guide inclined piece portions 24 are provided at a plurality of locations (3 locations in the illustrated example) at intervals in the 2 nd direction along the 1 st end portion 6 of the panel body 10.

The release preventing piece portion 28 is provided so as to rise upward from the tip end portion of the projecting piece portion 27, and the projecting piece portion 27 is provided so as to project outward in the 1 st direction from the lower end portion of a hanging piece portion provided so as to hang downward from the 1 st direction outer end portion of the fixed piece portion 23. These hanging piece portion, protruding piece portion 27, and release preventing piece portion 28 are provided over substantially the entire surface of the panel main body 10 in the 2 nd direction. With such a configuration, the rigidity can be improved while achieving a reduction in thickness and weight of the reinforcing member 20. In the figure, an example is shown in which the hanging piece portion, the protruding piece portion 27, and the release preventing piece portion 28 are not provided at both longitudinal end portions of the fixing piece portion 23 provided over the entire panel main body 10 in the 2 nd direction (see fig. 1 (a)).

The protruding piece 27 has a plate shape whose thickness direction is along the thickness direction of the panel body 10. The width dimension of the projecting piece portion 27 in the 1 st direction may be set to an appropriate dimension from the viewpoint of weight reduction or the like so that the folded piece 17a can be easily inserted through an insertion hole 29 described later. Further, the protruding piece portion 27 is provided so as not to substantially interfere with the panel main body 10 of the ceiling panel 1 adjacent in the 1 st direction. In the illustrated example, the surface of the projecting piece portion 27 facing downward is formed in substantially the same plane as the back surface 10a of the panel body 10. That is, the downward surface of the protruding piece 27 is substantially flush with the surface of the base portion 21 facing the panel body 10.

The dimension of the release preventing piece portion 28 in the vertical direction from the fixed piece portion 23 is set to be larger than the protruding dimension of the hooked piece 26 so that the upper end is located above the upper end of the hooked piece 26. In the illustrated example, the release preventing piece portion 28 is provided with a plurality of elongated holes having a long diameter in the 2 nd direction at intervals in the 2 nd direction substantially similarly to the base portion 21 and the fixed piece portion 23 (see fig. 3 (a)). With such a configuration, when a foundation is provided at a middle position in the 2 nd direction of the ceiling panel 1 as described above for the purpose of mounting, reinforcing, or the like of equipment, it is possible to easily cut out a portion of the release preventing piece portion 28 that interferes with the foundation.

As shown in fig. 3 (a) and 5 (b), the insertion hole 29 is provided across the release preventing piece portion 28 and the protruding piece portion 27. That is, the insertion hole 29 is provided continuously so as to penetrate the 1 st direction outer side portion of the projecting piece portion 27 and the lower side portion of the release preventing piece portion 28. The insertion holes 29 are provided at a plurality of locations (3 locations in the drawing) at intervals in the 2 nd direction along the 1 st end portion 6 of the panel body 10 so as to be positioned corresponding to the hooked pieces 26.

The dimension of the insertion hole 29 in the 2 nd direction is set to be larger than the dimension of the protruding portion 17 and the folded piece 17a of the hook portion 16 in the 2 nd direction.

The insertion hole 29 may have a dimension along the vertical direction set to an appropriate dimension so as not to easily interfere with the hook portion 16 of the ceiling panel 1 adjacent to the 1 st direction. In the drawing, an example is shown in which the insertion hole 29 is provided so that an upper end opening edge portion of the insertion hole 29 facing downward is positioned above the upper surface of the hook portion 16.

The dimension of the insertion hole 29 along the 1 st direction may be set to a suitable dimension from the viewpoint of the insertion property of the folded piece 17a. In the figure, an example is shown in which the insertion hole 29 is provided over the majority of the projecting piece portion 27 in the 1 st direction. Further, the release preventing piece portion 28 and the insertion hole 29 may not be provided.

The reinforcing member 20 having the above-described structure may be formed continuously from an appropriate metal material by pressing, bending, or the like. Further, the reinforcing member 20 may not be provided at the wall-side 1 st end portion 6 of the ceiling panel 1 disposed at the wall side.

Next, an example of the procedure of constructing the ceiling panel 1 configured as described above will be described.

As shown in fig. 5 (a) and 5 (b), the held end portions 8 and 8 on both sides in the 2 nd direction of the constructed ceiling panel 1 are held by the ceiling bases 2 and 2 provided at a distance in the 2 nd direction, and the 1 st end portion 6 is fixed to the ceiling bases 2 and 2 by the fixing tool 3 via the fixing piece portion 23. The second end portion 7 of the constructed ceiling panel 1 may be fixed to an appropriate wall-side base, or may be fixed to a fixed object by various fixing methods.

The unfinished ceiling panel 1 held in a substantially perpendicular or inclined state with respect to the 1 st end portion 6 of the ceiling panel 1 finished as described above with the 2 nd end portion 7 being the upper side is moved from the lower side. As shown in fig. 6 (a) and 6 (b), the hooking portion 16 of the ceiling panel 1 not under construction is inserted into the insertion hole 29 of the ceiling panel 1 under construction, and the folded piece 17a thereof is hooked to the hooked piece 26 of the ceiling panel 1 under construction. With such a configuration, although depending on the ceiling height, it is not necessary to perform work at a high height using a step or the like, and the 2 nd end portion 7 of the ceiling panel 1 that has not been constructed may be held at the 1 st end portion 6 of the ceiling panel 1 that has been constructed while standing on the floor.

Then, as indicated by the two-dot chain line in fig. 6 (b), the unfinished ceiling panel 1 is rotated about the folded piece 17a as a fulcrum to raise the 1 st end 6 side thereof until it becomes substantially horizontal. Next, the unfinished ceiling panel 1 is moved to approach the side in the 1 st direction with respect to the finished ceiling panel 1, and the abutment surface 16a of the unfinished ceiling panel 1 is brought into abutment with the abutted surface 26a of the finished ceiling panel 1 (see fig. 2 (b)).

When the constructed ceiling panel 1 is disposed in the 2 nd direction, the end face of the held end 8 on the 2 nd end 7 side of the non-constructed ceiling panel 1 is brought into contact with the contact piece portion 23c of the constructed ceiling panel 1 opposed thereto. The 3 rd contact piece portion 21c of the 1 st end portion 6 of the ceiling panel 1 not yet constructed is brought into contact with the end face of the held end portion 8 of the ceiling panel 1 constructed so as to be opposed thereto.

The magnets 9, 9 of the held end portions 8, 8 on both sides in the 2 nd direction of the ceiling panel 1 that is not being constructed are attracted to the ceiling bases 2, 2. In addition, the positioning in the 1 st direction and the 2 nd direction of the ceiling panel 1 not yet constructed may be performed in a state where the magnets 9, 9 of the held end portions 8, 8 are attracted to the ceiling bases 2, 2.

Then, the fixing piece portion 23 of the 1 st end portion 6 of the unfinished ceiling panel 1 is fixed to the ceiling bases 2 and 2 by the fixing tool 3. Similarly, a plurality of ceiling panels 1 may be constructed in order to be adjacent to each other in the longitudinal and transverse directions. The above-described procedure is merely an example, and various modifications can be made.

Next, an example of the ceiling panel according to embodiment 2 and an example of the procedure for constructing the ceiling panel will be described with reference to fig. 7 to 11.

In the following embodiments, differences from the above-described examples will be mainly described, and the same components will be denoted by the same reference numerals and will be omitted or described in brief. Further, the same effects and the like as those of the above-described example will be omitted or briefly described.

The ceiling panel 1B according to the present embodiment is different from the above-described embodiment 1 mainly in the structures of the magnet 9A, the coupling member 15B, and the reinforcing member 20A.

In the present embodiment, as shown in fig. 7 (a), the magnet 9A is provided on the back surface 10a side of the panel body 10 via a magnet holding member 34 that holds the magnet 9A in a housing manner. With such a configuration, even when the magnet 9A is relatively easily broken, the magnet holding member 34 comes into contact with the ceiling base 2, and therefore damage to the magnet 9A and the like due to impact or the like at the time of contact with the ceiling base 2 can be suppressed. The magnet 9A housed in the magnet holding member 34 may be a neodymium magnet having a relatively large magnetic force. In the figure, an example is shown in which the magnet 9A is formed in a disc shape having a thickness direction along the thickness direction of the panel body 10 (see fig. 8 c).

As shown in fig. 7 (b), the contact surface 34a of the magnet holding member 34 that contacts the ceiling base 2 is formed in the same plane as the contact surface 23A of the fixing piece portion 23A of the reinforcing member 20A that will be described later that contacts the ceiling base 2. The abutment surface 34a of the magnet holding member 34 and the abutment surface 23A of the fixed piece portion 23A are formed in the same plane, and as described above, the same is not limited to the completely same plane, and includes a deviation of about 2mm in the panel thickness direction, for example.

As shown in fig. 8 (a) to 8 (c), the magnet holding member 34 is provided with an adhesive filling portion 36, and the adhesive filling portion 36 penetrates through the panel body 10 in the thickness direction and has an adhesive injection port 37a opened in the surface facing the ceiling base 2 side. With such a configuration, the magnet holding member 34 can be fixed by the adhesive injected into the adhesive filling portion 36 through the adhesive injection port 37a in a state where the magnet holding member is arranged along the back surface 10a of the panel body 10.

In the magnet holding member 34, an overflow path 38 having an overflow port 38a opened in a side peripheral surface thereof is provided so as to communicate with the adhesive filling portion 36. With such a configuration, when the adhesive is injected from the adhesive injection port 37a on the surface facing the ceiling base 2 side and is filled into the adhesive filling portion 36, the adhesive can be made to overflow from the overflow port 38 a. This can suppress defective filling of the adhesive in the adhesive filling portion 36.

The magnet holding member 34 is a resin molded product made of a synthetic resin material, and is configured to hold the magnet 9A so that the magnet 9A does not directly contact the ceiling base 2. The magnet holding member 34 is provided with a housing recess 35 for housing the magnet 9A. The housing recess 35 is configured to receive the magnet 9A from the surface facing the panel body 10. The housing recess 35 is provided so as to penetrate the magnet holding member 34 in the thickness direction of the panel body 10, and is provided so as to communicate with the adhesive filling portion 36. In the illustrated example, the housing recess 35 is provided at a substantially central portion of the magnet holding member 34 in a plan view.

The housing recess 35 is defined by an inner circumferential wall surface that abuts against or is close to the side circumferential surface of the magnet 9A.

Further, a base side piece portion 35a is provided to partition the ceiling base 2 side of the housing recess 35. The base side piece 35a is provided to suppress the movement of the magnet 9A toward the ceiling base 2. In the illustrated example, the base side piece portion 35a is provided so as to protrude from the opening peripheral edge portion of the storage cavity 35 on the ceiling base 2 side toward the axial center side of the storage cavity 35. In addition, an example is shown in which a plurality of (3 in the drawing) base side sheet portions 35a are provided at intervals in the circumferential direction.

Further, a panel side piece 35b is provided to partition the panel body 10 side of the housing recess 35. The panel side piece 35b is provided to suppress the movement of the magnet 9A toward the panel main body 10. The panel side piece 35b is provided in a claw shape at a distal end portion of a locking piece portion whose distal end side is elastically deformable in a direction of expanding the diameter of the receiving recess 35. The surface of the panel side piece 35b facing the panel main body 10 is formed as an inclined guide surface so that the magnet 9A can be inserted into the receiving recess 35. In the figure, an example is shown in which a plurality of (3 in the figure) locking piece portions are provided at intervals in the circumferential direction.

The adhesive filling portion 36 is provided so as to surround the periphery of the locking piece portion and the peripheral wall portion constituting the inner peripheral wall surface of the housing recess 35, and is provided so as to open toward the side of the panel main body 10. The peripheral wall of the magnet holding member 34 is provided so as to partition the opening of the panel body 10 side of the adhesive filling portion 36. The adhesive injected into the adhesive filling portion 36 through the adhesive injection port 37a may be filled also on the panel body 10 side of the magnet 9A, thereby suppressing the movement of the magnet 9A with respect to the magnet holding member 34.

The adhesive injection port 37a is opened at a position adjacent to the housing recess 35 (magnet 9A). In the present embodiment, the adhesive injection ports 37a and 37a are provided so as to be open on both sides of the accommodation recess 35 in the 1 st direction. These adhesive injection ports 37a, 37a are openings on the ceiling base 2 side of the adhesive injection paths 37, and the adhesive injection paths 37, 37 are provided so as to penetrate through the base side wall portion of the magnet holding member 34 that partitions the ceiling base 2 side of the adhesive filling portion 36. These adhesive injection passages 37, 37 are provided so as to be located on both sides of the housing recess 35 in the 1 st direction.

The overflow path 38 is provided so as to penetrate the peripheral wall portion of the magnet holding member 34. In the present embodiment, the overflow path 38 is formed in a groove shape that opens on the side of the panel body 10. Further, 2 overflow paths 38, 38 are provided so as to extend from the adhesive injection paths 37, 37 provided on both sides of the housing recess 35 in the 1 st direction toward the peripheral wall portion as described above.

The overflow path 38, the adhesive injection paths 37 and 37, and the adhesive filling portion 36 may be formed in appropriate shapes so that the adhesive injected through the adhesive injection ports 37a and 37a extends over a wide range of the adhesive filling portion 36.

In the illustrated example, the held end portion 8 is provided with 5 magnets 9A and the magnet holding member 34 holding the magnets at intervals in the 1 st direction substantially similarly to the above, but the present invention is not limited to this. In the figure, an example is shown in which the magnet 9A (magnet holding member 34) of one held end portion 8 and the magnet 9A (magnet holding member 34) of the other held end portion 8 are provided so as to be at the same position in the 1 st direction substantially in the same manner as described above, but the present invention is not limited to this embodiment. For example, the magnet 9A of one held end 8 and the magnet 9A of the other held end 8 may be provided at positions shifted from each other in the 1 st direction so that the magnets 9A of the ceiling panels 1B do not repel each other when the plurality of ceiling panels 1B are stacked. The magnet holding member 34 for holding the magnet 9A is not limited to the above configuration, and may have various other configurations.

The reinforcing member 20A includes, substantially in the same manner as described above: a base portion 21A which is long in the 2 nd direction and extends along the back surface 10a of the 1 st end portion 6 of the panel body 10; and an attachment portion 22A provided on the base portion 21A and attaching the reinforcing member 20A to the panel body 10. In the figure, an example is shown in which the long holes of the base portion 21A are arranged in a row in a mutually different manner, unlike the embodiment 1, so as to form a substantially T-shape that is flat when viewed in the thickness direction, and in which the vertical line portions of the T-shape face each other (see fig. 8 (a) and 9 (a)). In the present embodiment, the reinforcing member 20A is configured not to include the 1 st contact piece portion 21a, the 2 nd contact piece portion 21b, the 3 rd contact piece portion 21c, and the contact piece portion 23 c.

The mounting portions 22A are provided at a plurality of positions at intervals in the longitudinal direction of the base portion 21A, substantially similarly to the above. As shown in fig. 9, the attachment portion 22A is configured to hold the sandwiched layer 13a of the panel body 10 in a sandwiched manner by the insertion piece portion 32. In the present embodiment, the holding piece 33 is provided to hold the attachment portion 22A in a sandwiched manner by the insertion piece 32. The fastening tool 5 penetrating the holding piece 33 and the attachment portion 22A is fixed to the insertion piece 32. With such a configuration, the reinforcing member 20A can be mechanically fixed to the 1 st end portion 6 substantially similarly to the above. The insertion piece portion 32 and the holding piece portion 33 may be provided integrally with the fixing member 31.

The insertion piece portion 32 is inserted into the layer of the panel body 10 from one of the two cut portions 14A, 14A extending in the 1 st direction, and the insertion direction distal end portion 32a is exposed through the other cut portion 14A, substantially similarly to the above. The insertion-direction front end portion 32a of the insertion piece portion 32 is tapered as viewed in the thickness direction, substantially as described above. The insertion piece 32 is provided with a fixing hole 32b for fixing the shaft of the fastening tool 5.

The holding piece 33 is plate-shaped with its thickness direction along the thickness direction of the panel body 10. The holding piece 33 is continuously formed at the insertion direction proximal end of the insertion piece 32 by bending or the like, and is provided so as to extend in the insertion direction (2 nd direction) in parallel with the insertion piece 32. In the figure, an example is shown in which the dimension of the holding piece portion 33 in the 1 st direction is substantially the same as the dimension of the insertion piece portion 32 in the same direction, and the dimension of the holding piece portion 33 in the 2 nd direction is smaller than the dimension of the insertion piece portion 32 in the same direction.

The holding piece 33 is provided with a grip 33a rising toward the ceiling base 2. In the illustrated example, the holding portion 33a is provided at the insertion direction distal end portion of the holding piece portion 33.

The holding piece 33 is provided with an insertion hole 33b through which the shaft of the fastening tool 5 is inserted so as to be positioned in line with the attachment hole 32b of the insertion piece 32 when viewed in the thickness direction. The holding piece portion 33 and the insertion piece portion 32 are formed so that the mounting portion 22A and the sandwiched layer 13a can be inserted therebetween. Further, a recess corresponding to the thickness of the insertion piece portion 32 may be provided on the back surface 10a side of the panel main body 10. Such a recess may be formed by pressing or the like. The form of fixing the reinforcing member 20A to the panel body 10 is not limited to the above-described configuration, and various other modifications are possible.

In this reinforcing member 20A, as described above, a fixing piece portion 23A fixed to the ceiling base 2 is provided over substantially the entire length. The fixed piece portion 23A is provided so as to extend from the upper end of the rising piece portion rising from the 1 st direction outer end of the base portion 21A toward the ceiling base 2 side, substantially similarly to the above. Insertion holes 23b, 23b through which shaft portions of fastening tools 3, 3 for fastening the reinforcing member 20A to the ceiling bases 2, 2 on both sides are inserted are provided at both longitudinal (2 nd direction) end portions of the fixing piece portion 23A (see fig. 8 (a)). The insertion holes 23b and 23b are elongated holes having a long diameter in the 2 nd direction. In the illustrated example, as in the above-described example, a plurality of long holes having a long diameter in the 2 nd direction are provided at intervals in the 2 nd direction in the fixing piece portion 23A.

In the present embodiment, instead of providing the hanging piece portion or the projecting piece portion 27 and the anti-release piece portion 28 on the projecting direction distal end side of the fixed piece portion 23A, the bent portion 24A bent in a substantially V shape is provided over the entire length as viewed in the 2 nd direction. With such a configuration, the rigidity of the reinforcing member 20A can be improved.

As shown in fig. 11, the hooked portion 25A is configured to be able to hook and hold the hooking portion 16B of the adjacent ceiling panel 1B in a state where the 2 nd end portion 7 of the adjacent ceiling panel 1B in the 1 st direction is positioned above the 1 st end portion 6, substantially similarly to the above.

In the present embodiment, the hooked portion 25A is provided at the 1 st direction outer end portion of the base portion 21A. The hooked portion 25A is provided with a hooked piece 26A that is plate-shaped with its thickness direction along the 1 st direction and that rises from the base portion 21A toward the ceiling base 2 side, substantially as described above. In the present embodiment, the portion of the rising piece portion provided between the base portion 21A and the fixed piece portion 23A on the base portion 21A side is configured as the hooked piece 26A. Further, insertion holes through which the hook portions 16B are inserted are provided in the ceiling base 2 side end portion which is the rising piece portion and the rising piece portion side portion of the fixed piece portion 23A. In the figure, an example is shown in which several (4 in the figure) of the long holes provided in the fixing piece portion 23A are used as insertion holes.

As shown in fig. 10, the hook portion 16B of the coupling member 15B is configured to have a folded piece 17a at the distal end of the extension portion 17 extending outward in the 1 st direction from the 2 nd end portion 7 of the panel body 10, in substantially the same manner as described above. In the present embodiment, the connecting member 15B is integrally provided with an insertion piece 18B. The insertion piece 18B is inserted into the layer of the panel main body 10 through the cut portion 14B extending in the 2 nd direction. The insertion piece 18B is provided so as to extend in the 1 st direction, and the hook 16B is provided continuously at the 1 st direction outer end via a rising piece. In the present embodiment, the rising piece portion of the connecting member 15B is configured not to abut against the hooked piece 26A of the ceiling panel 1B adjacent in the 1 st direction in the state where the ceiling panel 1B is constructed, as shown in fig. 11 (B).

The insertion direction distal end portion 18c of the insertion piece portion 18B is tapered as viewed in the thickness direction, substantially as described above. The insertion piece 18B is provided with a fitting hole 18a for fitting the shaft of the fastening tool 4. The insertion piece 18B is inserted from the 1 st-direction outer cut 14B among the 1 st-direction cuts 14B provided at intervals in the 1 st direction, and the insertion-direction front end 18c is exposed on the back surface 10a side of the panel body 10 through the 1 st-direction inner cut 14B. Further, a concave portion corresponding to the thickness of the insertion piece portion 18B may be provided on the back surface 10a side of the panel main body 10.

The 2 nd end portion 7 is provided with a fixing piece portion 19B arranged along the back surface 10a, and the fixing piece portion 19B is held so as to sandwich the sandwiched layer 13a of the panel body 10 by the insertion piece portion 18B. The fixing tool 4 for penetrating the fixing piece 18 is fixed to the insertion piece 18B. With such a configuration, similarly to the above, the fastening member 15B (hook 16B) can be mechanically fixed to the 2 nd end portion 7 by the fastening tool 4 attached to the insertion piece portion 18B while the sandwiched layer 13a is sandwiched between the fixing piece portion 19B and the insertion piece portion 18B.

The fixing piece 19B is provided with an insertion hole 19a through which the shaft of the fastening tool 4 is inserted. In the present embodiment, the fixing piece 19B is provided separately from the insertion piece 18B. Instead of this structure, the fixing piece 19B may be integrally provided with the insertion piece 18B. In the illustrated example, the fixing piece 19B is formed in a disc shape, but the invention is not limited to this. The form of fixing hook 16B to panel body 10 is not limited to the above-described configuration, and various other modifications are possible.

In the present embodiment, hook 16B (connecting member 15B) is provided at a plurality of positions (4 positions in the drawing) at intervals in the 2 nd direction at the 2 nd end 7. The hooked piece 26A of the hooked portion 25A of the reinforcement member 20A is provided at a position corresponding to the hooked portion 16B.

The ceiling panel 1B having the above-described structure can be constructed as follows as shown in fig. 11, as well as described above.

That is, as shown in fig. 11 (a), with the 2 nd end portion 7 of the ceiling panel 1B that has not been constructed being on the upper side, the hook portion 16B is hooked to the hooked portion 25A of the 1 st end portion 6 of the ceiling panel 1B that has been constructed. As indicated by the two-dot chain line in fig. 11 (a), the unfinished ceiling panel 1B is rotated about the folded-back piece 17a as a fulcrum so as to raise the 1 st end 6 side thereof until it becomes substantially horizontal (see fig. 11 (B)). In the present embodiment, since the positioning portion for positioning the positions of the end surfaces of the ceiling panels 1B and 1B adjacent to each other in the 1 st direction is not provided, a penetrating gap may be provided via an appropriate spacer or the like. The gap between the end faces of the ceiling panels 1B and 1B adjacent to each other in the 2 nd direction may be formed by an appropriate spacer or the like. Then, the fixing piece portion 23A of the 1 st end portion 6 of the unfinished ceiling panel 1B is fixed to the ceiling bases 2, 2 by the fastening tool 3.

Further, the ceiling panels 1, 1A, and 1B according to the above-described embodiments may be partially combined or combined with each other to be applied.

In the above embodiments, the example in which the penetrating gaps are formed between the ceiling panels 1, 1B, and 1B adjacent to each other in the 1 st direction and between the ceiling panels 1, 1B, and 1B adjacent to each other in the 2 nd direction has been described, but the gap may be formed between one or both of them. That is, the end surfaces of the adjacent ceiling panels 1, 1B may be brought into contact with each other. In this case, the positions of the contact surface 16a, the surface to be contacted 26a, the contact piece portion 23c, the 3 rd contact piece portion 21c, and the like described in the above embodiment 1 may be appropriately modified, and the positioning portion may not be provided.

In the above embodiments, the hooked portions 25 and 25A and the fixing piece portions 23 and 23A are provided in the reinforcing members 20 and 20A provided over substantially the entire 1 st end portion 6 of the panel body 10 in the 2 nd direction, but one or both of them may not be provided in the reinforcing members 20 and 20A. Further, the reinforcing members 20 and 20A may not be provided. In this case, the hooked portions 25 and 25A and the fixing pieces 23 and 23A may be provided separately at the 1 st end portion 6 of the panel body 10.

In addition, in the above embodiments, the example in which the held end portions 8, 8 on both sides in the 2 nd direction are held by the magnets 9, 9A on the ceiling bases 2, 2 has been described, but may be fixed to the ceiling bases 2, 2 by an appropriate fastening tool in addition to the magnets 9, 9A.

In the above embodiments, the hooked portions 25 and 25A are configured to have the hooked pieces 26 and 26A protruding in the thickness direction of the panel body 10, but the configuration is not limited to this, and may be in the form of locking holes into which the hooked portions 16 and 16B are inserted. Various other modifications are possible as the hooked portions 25 and 25A to hook the hooking portions 16 and 16B.

In the above embodiments, the example in which the folding piece 17a is provided to the hook portions 16 and 16B has been described, but the hook portions 16 and 16B may be L-shaped or insertion-shaped without providing such a folding piece 17a, and various other modifications may be made as the hook portions 16 and 16B. In this case, the hooked portions 25 and 25A may be appropriately deformed as necessary. The configuration of each portion of the ceiling panels 1, 1A, and 1B according to the above embodiments is not limited to the above-described configuration, and various other modifications are possible.

Description of the reference symbols

1. 1A, 1B ceiling panel

6. End 1 (end 1 in the 1 st direction)

7. End 2 (end 2 of the 1 st direction)

8. Held end (end in the 2 nd direction)

9. 9A magnet

9a contact surface

10. Panel body

10a back side

16. 16B hook

20. 20A reinforcing member

23. 23A fixed piece part

23a contact surface

25. 25A hooked part

34. Magnet holding member

34a contact surface

36. Adhesive filling part

37a adhesive injection port

38. Spill path

38a overflow outlet

2. Ceiling base

3. Fastening tool

3a Cap

Claims (7)

1. A ceiling panel characterized in that, in the ceiling panel,

is fixed to a ceiling base which has a long shape extending in a 1 st direction and is disposed in parallel with a space in a 2 nd direction orthogonal to the 1 st direction,

the ceiling panel includes: a panel body having a square flat plate shape and including a base material of a foamed resin or a fiber; magnets provided on the back side of both side ends in the 2 nd direction of the panel body and attracted by the attracted portions of the ceiling base; a reinforcing member provided along a back surface of a 1 st-direction 1 st end of the panel body in a 2 nd direction substantially entirely; a fixing piece portion provided on the reinforcing member so as to protrude outward in the 1 st direction from the 1 st direction end portion, and fixed to the ceiling base; a hooked portion provided on the reinforcing member; and a hooking part provided at the 1 st-direction 2 nd end of the panel body and hooked to a hooked part of a ceiling panel adjacent in the 1 st direction,

the ceiling panel is configured to be rotatable about the 1 st-direction 2 nd end portion side as a fulcrum in a state where the 1 st-direction 2 nd end portion side is held by the hook portion being hooked to the hooked portion of the ceiling panel adjacent in the 1 st direction.

2. The ceiling panel of claim 1,

the contact surface of the fixing piece portion with the ceiling base and the contact surface of the magnet with the ceiling base are formed in the same plane.

3. The ceiling panel of claim 1,

the magnet is provided on the back side of the panel body via a magnet holding member that holds the magnet in a housed manner;

the contact surface of the fixing piece portion with the ceiling base and the contact surface of the magnet holding member with the ceiling base are formed in the same plane.

4. The ceiling panel of claim 1,

the fixing piece portion is provided so as to form a gap with the back surface of the ceiling panel adjacent in the 1 st direction, the ceiling panel adjacent in the 1 st direction is disposed below the fixing piece portion, and the gap is greater than or equal to the dimension along the axial direction of the cap portion of the fastening tool for fastening the fixing piece portion to the ceiling base.

5. The ceiling panel of claim 2,

the fixing piece portion is provided so as to form a gap with the back surface of the ceiling panel adjacent in the 1 st direction, the ceiling panel adjacent in the 1 st direction is disposed below the fixing piece portion, and the gap is greater than or equal to the dimension along the axial direction of the cap portion of the fastening tool for fastening the fixing piece portion to the ceiling base.

6. The ceiling panel of claim 3,

the fixing piece portion is provided so as to form a gap with the back surface of the ceiling panel adjacent in the 1 st direction, the ceiling panel adjacent in the 1 st direction is disposed below the fixing piece portion, and the gap is greater than or equal to the dimension along the axial direction of the cap portion of the fastening tool for fastening the fixing piece portion to the ceiling base.

7. The ceiling panel of any one of claims 1 to 6,

the magnet is arranged on the back side of the panel body through a magnet holding member for accommodating and holding the magnet;

the magnet holding member is provided with an adhesive filling portion penetrating in the thickness direction of the panel body and having an adhesive injection port opened in a surface facing the ceiling base side, and an overflow path having an overflow port opened in a side peripheral surface so as to communicate with the adhesive filling portion.

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